The mineral-rich mountain range found in South America is the Andes. Stretching along the western edge of the continent, the Andes are the longest continental mountain range in the world. They are known for their diverse geology and rich deposits of minerals like copper, gold, and silver. The Andes have also played a crucial role in the economies of several South American countries, including Chile and Peru, through mining industries that extract these valuable resources. This mountain range also influences climate and ecosystems, contributing to the rich biodiversity found in the region.